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John Deere 4840 Tractor
The
John Deere 4840 is a two-wheel drive row-crop tractor from Iron Horses series.
This model was manufactured between 1978 and 1982. The JD 4840 driveline
components: John Deere 6466 four-stroke six-cylinder direct injection
turbocharged intercooled diesel engine and 8x4 full powershift transmission.
A 466 cubic inches (7.6 L) engine has a cylinder bore of 4.56" (116 mm),
piston stroke of 4.75" (121 mm), and rated power of 200 hp (148.1 kW).
The maximum travel speed (forward and reverse): 18.6 mph (29.9 km/h) /
6.4 mph (10.3 km/h).
The closed center hydraulic system used a pump with a flow of 23 gpm
(87.1 lpm) gpm. The hydraulic pressure is 157 bar (2275 psi). The John
Deere 4840 was equipped with a power steering system, differential
hydraulic wet disc brakes, 11.00x16 or 16.5Lx16.1 front tires, and
18.4x38 or 18.4x42 rear tires. The wheelbase is 118.5 inches (3000 mm).
| Engine Model |
John Deere 6466 |
| Engine Type |
4 Stroke six-cylinder direct injection turbocharged intercooled diesel |
| Number of Cylinders |
6 |
| Displacement, cu in (L) |
466 (7.64) |
| Engine Bore, in (mm) |
4.56 (116.0) |
| Engine Stroke, in (mm) |
4.75 (121.0) |
| Aspiration |
Turbocharged |
| Rated Engine Power, hp (kW) |
200.0 (148.1) |
| Rated Engine Speed, rpm |
2200 |
| Idle Speed, rpm |
800-2400 |
| Compression |
15.5:1 |
| Firing Order |
1-5-3-6-2-4 |
| Fuel System |
Direct injection |
| Air Cleaner |
Dual dry element |
| Fuel Tank Capacity, gal (L) |
103.0 (390.0) |
| Oil Capacity, qts (L) |
21.0 (19.9) |
| Coolant Capacity, qts (L) |
40.0 (37.5) |
| Electrical System Rating, Volts |
12 |
| Charging System |
Alternator |
| Alternator Rating, Amps |
90 |
| PTO Operational Type |
Independent |
| PTO Horsepower, hp (kW) |
180.0 (134.0) |
| PTO Clutch |
Hydraulic disc |
| PTO Speed, rpm |
1000 |
| PTO/Engine Speed, rpm |
1000/2200 |
| Transmission Type |
Power Shift |
| Gearbox Type |
8F/4R, Full powershift |
| Number of Forward Gears |
8 |
| Number of Reverse Gears |
4 |
| Clutch Type |
Wet disc |
| Oil Capacity, qts (L) |
66.3 (62.5) |
| Maximum Forward Speed, mph (kph) |
18.6 (29.9) |
| Maximum Reverse Speed, mph (kph) |
6.4 (10.3) |
| Drive Wheels |
2WD 4x2 |
| Steering Configuration |
Front steer |
| Steering System |
Power Steering |
| Brakes Type |
Differential hydraulic wet disc |
| Front Tire Size (Std) |
11.0-16 |
| Rear Tire Size (Std) |
18.4-38 |
| Front Tire Size (Opt) |
16.5L-16.1 |
| Rear Tire Size (Opt) |
18.4-42 |
| Front Tread Width, in (mm) |
58-100 (1470-2540) |
| Rear Tread Width, in (mm) |
60-131.5 (1520-3340) |
| Hydraulic System Type |
Closed center |
| Implement Pump Flow, gpm (Lpm) |
23.0 (87.1) |
| Hydraulic Pressure, Bar (psi) |
157 (2275) |
| Hydraulic Capacity, gal (L) |
16.5 (62.5) |
| Number of Standard Remote Valves |
2/3 |
| 3-Point Hitch Category |
3/3N |
| Standard Lift Capacity at lift pin, lb (kg) |
8295 (3760) |
| Upper Link Pin Diameter, in (mm) |
31.75 (1.25) |
| Upper Link Hole Diameter, in (mm) |
32.00 (1.26) |
| Lower Link Pin Diameter, in (mm) |
36.58 (1.44) |
| Lower Link Hole Diameter, in (mm) |
37.34 (1.47) |
| Lower Hitch Point Span (3/3N), in (mm) |
964.95 (37.99) / 825 (32.5) |
| Width of Ball, in (mm) |
45 (1.77) |
| Pin Centerline (Lower to Upper), in (mm) |
685 (27.0) |
| Wheelbase, in (mm) |
118.5 (3000) |
| Length, in (mm) |
177 (4490) |
| Height (Cab), in (mm) |
117 (2970) |
| Overall Width, in (mm) |
96 (2430) |
| Ground Clearance, in (mm) |
14.9 (370) |
| Front Axle Clearance, in (mm) |
26 (660) |
| Turning Radius, in (mm) |
162 (4100) |
| Shipping Weight, lb (kg) |
14900 (6760) |
| Operating Weight, lb (kg) |
18000 (8165) |
| Ballasted Weight, lb (kg) |
20370 (9240) |
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| Farm Tractors Technical Specifications |
